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Gooolati
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Homework Statement
Prove T is a linear transformation and find bases for both N(T) and R(T).
Homework Equations
The Attempt at a Solution
T:M2x3(F) [itex]\rightarrow[/itex] M2x2(F) defined by:
T(a11 a12 a13)
(a21 a22 a23)
(this is one matrix)
=
(2a11-a12 a13+2a12)
( 0 0)
(this is one matrix)
So I verified that it is a linear transformation by checking that T(cx+y)=cT(x)+T(y). But I don't understand how to find a basis for the null space and range.
I can see that since N(T)={x:T(x)=0} that N(T) here it all vectors of the form:
(t/2 t -2t)
( b b b)
(this is one matrix)
Since the 2nd row in our domain always goes to 0, the second row is arbitrary, which I represented by b.
How do I find a basis for all multiples of the matrix
t(1/2 1 -2)
( b b b)?
And I'm not even sure on how to start off finding the basis for the range. All help is appreciated. Thanks!